“Bite-Size Bits of Local, National, and Global History”
“Bite-Size Bits of Local, National, and Global History”
Fort Belvoir in Fairfax County, Virginia — The American South (Mid-Atlantic)

‘Thermo-Con’ House

‘Thermo-Con’ House Marker image. Click for full size.
By Tom Troy, July 18, 2008
1. ‘Thermo-Con’ House Marker
Inscription. In 1948, the Department of Defense worked with Higgins Industries to develop a standard house design to meet the Army’s housing shortage. Higgins Industries designed and mass-produced landing craft during World War II and held the patent for ‘Thermo-Con,’ a cement material that expanded as it cured. The renowed industrial architects, Albert Kahn & Associates, designed the prototype in the International style and the 410th Engineer Battalion (Construction) completed the building in 1949. Due to its innovative design and construction techniques, the house was plaed on the Virginia Landmarks Register in 1997. In 2000, the Army renovated and returned ‘Thermo-Con’ House to use as distinguished visitor housing.
Location. 38° 41.187′ N, 77° 8.364′ W. Marker is in Fort Belvoir, Virginia, in Fairfax County. Marker is on Gunston Road south of 21st Street, on the left when traveling south. Touch for map. Marker is in this post office area: Fort Belvoir VA 22060, United States of America.
Other nearby markers. At least 8 other markers are within walking distance of this marker. Non Commissioned Officers’ Service Club (approx. ¼ mile away); William Fairfax and His Son, George William Fairfax (approx. 0.7 miles away); Fairfax Family Cemetery (approx.
‘Thermo-Con’ House Marker image. Click for full size.
By Tom Troy, July 18, 2008
2. ‘Thermo-Con’ House Marker
0.7 miles away); Slavery and Belvoir (approx. 0.7 miles away); Gardens and Kitchen at Belvoir (approx. 0.7 miles away); Fairfax Monument (approx. 0.7 miles away); Life at Belvoir (approx. 0.7 miles away); The Influence of the Fairfax Family (approx. 0.7 miles away). Touch for a list and map of all markers in Fort Belvoir.
Regarding ‘Thermo-Con’ House. Designed by E. S. Henderson, Albert Kahn Associates of Detroit, Michigan.
Also see . . .
1. Thermo-Con House. “The house features several elements associated with the International Style, an early-20th-century style of design that shunned historically based decoration. Elements integral to the International Style include an asymmetrical mass, a flat, asphalt roof, smooth unornamented wall surfaces, vertical windows, a wide, boxed overhang, a simple, unadorned front door, and plain round supports for the house. A water table and second-floor belt course stress the building's horizontality.” (Submitted on July 22, 2008.) 

2. Nomination Form for the National Register of Historic Places. “The ‘Thermo-Con’ material used to construct the walls, floors, and roof system of the house was comprised of ‘ordinary cement, water, and a patented formula of mineral origin.’ The mixture
Thermo-Con House image. Click for full size.
By Tom Troy, July 18, 2008
3. Thermo-Con House
was combined in a ‘Thermo-Con generator’ and made into a thick paste called ‘Thermo-Con Slurry’. It was then pumped into a standard building form for concrete through a flexible hose to a predetermined depth. This material was then left to set for forty-five minutes. During the setting period the mixture expanded a remarkable two and one-half times its original size. At the time it was noted that this house ‘rose like bread dough.’ According to an article in a 1949 issue of the Fort Belvoir Castle, Thermo-Con was a new building material that was creating quite a stir in the construction field. The author stated, ‘Its qualities are almost legend—it floats, can be sawed with an ordinary carpenter’s handsaw, drilled with a brace and bit; it holds nails and common wood screws, and its heat resistance and insulating qualities defy belief.” (Submitted on July 22, 2008.) 
Additional keywords. Fort Belvoir
Categories. MilitaryNotable Buildings
Credits. This page was last revised on June 16, 2016. This page originally submitted on July 22, 2008, by J. J. Prats of Powell, Ohio. This page has been viewed 1,107 times since then and 27 times this year. Photos:   1, 2, 3. submitted on July 22, 2008, by J. J. Prats of Powell, Ohio.
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